Shuttle and picker check for looms



. A. LECOMTE ET-AL SHUTTLE AND PICKBR CHECK FOR LOOIS Filed June 25, 1925 3 hee sm 1 n m A .e U W I .nt fi m oc T V wLAM v L 8 x \s d. 0 N MHMM d w. m AA? I A. LECOMTE ET AL SHUTTLE AND PICKER CHECK FORLOOIS Filed June 25, 1925 3 Sheets-Sheet a I Fig.3.

lnven'fors.

A\phonse LecomTe Adeklrd L'Archeveq ue byM ATTys.

Patented ca. 27, 1925.

ALrHoNsn LECOMTE AND ADELARD LARCHEVEQUE, or FALL'RIVER, MASSACHIL SETTS, ASSIG-NORS T0 DRAPER CORPORATION,OF HOPEDALE, MASSACHUSETTS, A

CORPORATION OF MAINE.

SHUTTLE AND PICKER cHEcx non Looms.

Application filed June 25, 1925. Serial No. 39,476.

To all whom, z'tmay concern:

Be it known that we, ALrHoNsn LECOMTE and ADELARD LARGHEVE UE, citizens of the United States, and both residents of Fall River, county of Bristol, State of Massachusetts, have invented an' Improvement in Shuttle and Picker Checks for Looms, of I which the following description, in connection' with the accompanying drawing, is a specification, like characters on the drawing representing like parts."

This invention relates to a shuttle and.

picker checking mechanism for looms.

positivey effect the checking of the shuttle and picker stick and one which may readily be applied to existing looms. v

i The object of the invention is further to provide a checking mechanism controlled by the shuttle itself, but in which the controlling force exerted by the shuttle shall not be sufficient to interfere with the proper boxing of the shuttle,

The object of the invention is further to provide such a checking mechanism in which a comparatively slightforce exerted by the shuttle as it enters the box is transformed into a comparatively large force acting. to effect the checking function.

'These and other objects and features of.

the invention will appear more fully from the accompanying description. and drawings and will be particularly pointed out inthe.

claims.

As the invention relates solely to the mechanism for checking the picker and shuttle, and as this mechanism is adapted to a wide range of loom construction, it willonly be necessary, for an understanding of the invention by those skilled in the art, to illustrate and describe a preferred embodiment thereof in connection'with those parts of an ordinary type of loom immediately concerned therewith. Furthermore, as the construction is the same, except for reversal of arrangement, at both sides of the loom, it. will'be suflicient to illustrate and describe.

onesideof the loom only.

In the drawings:

Fig. 1 is a top plan view away and partially in horizontal cross section of the left-hand end-of the gay and a small portion of the loom frame 0 the'ordi- The object is to provide a simple and'efii cient construction which will accurately and nary type of loom with a preferred form of the invention embodied therein.

Fig. 2 isa View in front elevation of the construction shown in Fig. 1.

F 3 is a left-hand end elevation of the ture is shown, including the usual side frame i 1, carrying on the transverse member 2 the I frog? Thelay sword 4 supports the usual lay 5 and the shaft 6 carrying the forwardly extending dagger 7 and upstanding arm 8 or binder fingerv of the usual protector mechanism On the lay at the end thereof is theusual shuttle box comprising the extended front wall 9, the cover plate 10 and the rear wall constituted chiefly as the rear binder 11. Thisrear binder is mounted on a vertical pivot 12 near the extreme outer end of the lay, has its front face 13 somewhat cam-shaped, as usual, and presents at its inward end a finger 14 in front of the binder finger 8.

A picker stick 15 which, as usual, rocks toward and from the centerof the loom about its lower end, extends upwardly through a slot 16 in the lay and the bottom of the shuttle box in line with the center of the shuttle box and is provided with the usual picker 17 at its upper end. A shuttle.

i 1 1,559,172" .PATENTjQ F q 18 is shown in Figs. 1, 2 and'3 in boxed position at the .conclusion of a pick and ready to' start back on the nextpick-across the lay. l

The shuttle and picker checkingmechanism, in the preferred form of the invention lllustrated, is mounted onthe lay through the medium of a metal bracket 19, an offset upper portion 20 of which is adjustably but rigidly secured to the lay by a bolt 21 passing through the lay and through a slot 22 in the portion 20. The main portion of the bracket depends beneath and is located under the lay. This portion is provided with lateral projections 23 near each end in V which is slidingly mounted a horizontally partially broken positioned slidebar 24. At the outer end this slide bar isof substantial width vertically and ,.is bent or formed to present a curved projection 25 extending forwardly and into the path of the picker stick. This projection on its inner face is provided. with a suitable cushion or buffer, herein shown a wide strip of leather 26. The slide bar 2 L is reduced at its inner end portion 27, thus forming vertical shoulders 28 which, on con'iing into engagement with the inner projection 23, limit the inward movement of the slide bar. A helical spring surrounds the reduced portion 2'? of the slide bar and abuts at one end against the bracket 19 and at the other end against a collar 30 pinned to the inner end of the slide bar. This spring, therefore, acts normally to move the slide bar inward and when the picker stick swings to its outermost position and comes into engagen' ent with the cushioned projection 25, it moves the slide bar outwardly, compressing the spring 29.

A bell crank lever is mounted upon the bracket 19 and consequently therethrough upon the lay, and has as its fulcrum a vertical shaft'Sl mounted in bearing projections 32 and 33 formed on the bracket 19. The longer arm Set of this bell crank lever extends upwardly and inwardly and is formed into or presents a convex button 35 at its free end which at its convex face is adapted to contact with the rear face of the binder-ll. This arm 3% is adjustably secured by a set screw 36 to the shaft 31. The shorter arm of the bell crank lever extends outwardly in horizontal alignment with the slidebar 2stand is in the form of a leaf spring. As illustrated, two leaves 37 and 38 are shown as comprising this spring and are secured in place by their inner ends passing into a slot in the shaft 31 and held in place by pins or rivets 39. The front face of this shoter arm comprising the leaf spring is providedwith a friction, facing 4 0 of leather orother suitable material.- The bracket 19 at the face of the slide bar 24: opposite the frictionfacing 4-0, is also provided with an inset wear plate or friction plate ll of suit able material.

'lhdprinciple upon which. the invention operates is well illustrated in Fig. 4. The effective length of the longer arm of the bell crank lever is the distance 42 from the centerof the convex face of the button 35 to the center of the shaft 31. lengthwise of the lay and the effective lei ggth of the shorter arm is the distance -13 from the center of the shaft 31 to the center of the friction facing lengthwise of. the lay. Consequently, a relatively small force pressing, against the button 35 exerts a relatively large force pressing against the slide bar 24:; Furthermore, there is no material sliding movement between the. binder 11 and the: button 35 and consequently no sliding friction this point, but the force is transinitt'ed as a, thr'us from the binder to the airing 1t, while, on the other hand, the force transmitted from the shorter arm of the bell crank lever to the slide bar 24 is transformed substantially entirely into friction acting to retard the sliding movement of the slide bar as it is clamped between the friction facing an and the wear plate il. r igainfthe spring 2-9 is effective with its entire force to retard outward endwise movement of the slide bar 24. and to effect the inward movement thereof. Again the bell crank lever, when the shorter arm is pressed against the slide bar 2%, acts not only to retard movement of the slide bar, but also to lock the slide bar against movement induced by the spring 29. It is the combination and relation of these factors which secures the characteristic and effective functioning of the mechanism of this invention.

lVhen the shuttle toward the end of its flight enters the box, the rear binder 11 is pressed forwardly in the usual manner by the binder finger 8. As the shuttle proceeds in its flight, it engages the cam facel3 of the binder, gradually swinging it rearwardly about its pivot12 and thusrocking the bell crank lever to press the friction facing d0 of the shorter arm against the slide bar 24:. During the same period, the nose of the shuttle engages and forces outwardly the picker stick, and the picker stick in turn engages and tends to move outwardly the slide bar 24. Because of the construction and principles already explained, a com: paratively slight force exerted by the shuttle in swinging th binder rearwardly' produces a relatively large force, togetherwith that of the spring 29 tending to check the outward IIIOYGD RGIii of the slide bar 2. L and consequently of the picker stick and the shuttle itself. The shuttle is thus brought quickly and positively to rest in its proper position in the in'therinore, when the shuttle comes to rest, a comparatively light pressure exerted by the binder on the bell crank lever locks the slide bar against inward movement induced by the spring 29., so that when the picker stick is next actuated'to pick the shuttle on its return movement, there is a minimum amount of force exerted by the checking mechanism which would tend to retard the. flight of the shuttle and practically the entire, force applied to the picker stick to effect the picking action is available to project the shuttle out ofthe box.

There is thus presented a very simple and effective shuttle and picker checking mechanism and one which may be readily applied to existing looms as well as built into new looms.

Having thus described the. invention, What isclaimed; as new, and desired to be secured by Letters Patent, is:

11 h le and risks: heaer-a 0cm es a ir r de tir s amt-a smile box with arear binder pivoted at the end of the lay comprising a slide bar mounted on the lay to slide longitudinally thereof and having a projection in the path of the picker stick, a spring interposed between the lay and the slide bar, acting to move the slide bar inward, and a bell crank lever fulcrumed on the lay and having its longer arm extending inward with its free end in the path of the pivoted binder and having its shorter arm extending outward and provided with a friction facing engaging the slide bar, whereby a relatively small force transmitted by the shuttle to the binder as it enters the shuttle box is transformed into a relatively large force acting to check the endwise movement of the shuttle through the picker stick without increasing the force required to pick the shuttle out of the shuttle box.

2. A shuttle and picker check for a loom having the construction defined in claim 1, in which the arms of the bell crank lever have a yielding movement relatively to each other transversely of the lay.

3. A shuttle and picker check for a. loom having the construction defined in claim 1, in which the shorterarm of the bell crank lever is a leaf spring, thus permitting it to yield relatively to the longer arm transversely of the lay.

4:. A shuttle and picker check for a loom comprising the construction defined in claim .1 in which the slide bar, spring and bell crank lever are mounted on the lay through the medium of a bracket rigidly secured to and depending from the lay.

5. A shuttle and picker check for a loom comprising the construction defined in claim 1, in which the slide bar, spring and bell crank lever are mounted on the lay through themedium of a bracket rigidly secured to and depending from the lay, and in which the fulcrum of the bell crank lever is a vertical shaft journalled in bearings in said bracket.

6. A shuttle and icker check for a loom havin a lay, a pic er stick and a shuttle box with a rear binder pivoted at the end of the lay comprising a slide bar mounted on th lay to slide longitudinally thereof and having a projection in the path of the picker stick, and a bell crank lever fulcrumed on the lay and having its longer arm extending inward with its free end in the path of the pivoted binder and having its shorter arm extending outward and frictionally engaging the slide bar, whereby a relatively small force transmitted by the shuttle to the binder as it nters the shuttle box is transformed into a relatively large force acting to check the endWise movement of the shuttle through the picker stick without increasing the force reqlgired to pick the shuttle out of the shuttle ox.

7. A shuttle and picker check for a loom ALPHONSE LECOMTE. ADELARD LARGHEVEQUE. 

